Re: One question to everybody

[Thanh Dang Nguyen <Nguyen.Dang.Thanh@Eng.Auburn.EDU>]

Hi Sonnet,

> 1) Is there a grafical program which can do that?

MATLAB can do the job. It also allows you to specify different interpolation
methods including zero-order, linear and cubic interpolations.

> 2) If we want to find a polynomial of 2 variables which has a graph containing
> n points, then are expressions of polynomial's coefficients known?

I guess you're talking about the least-square fitting problem given a polynomial
with known order. Basically it boils down to the pseudo-inverse problem of a
matrix, and MATLAB can also handle it easily.

Hope this helps!

-Thanh